We are down to the final four in the NFL. Mackenzie reacts to the biggest storylines from Sunday's divisional round action between the Chiefs and Browns and Bucs - Saints. » Subscribe to USA TODAY Sports: https://bit.ly/2L0ktE1 » USA TODAY delivers current local and national news, sports, entertainment,  finance, technology, and more through award-winning journalism, photos, videos and VR. #NFL #nflplayoffs #PatrickMahomesInjury